What is EV Suitability Decision Score?
An EV suitability score evaluates whether switching to electric makes practical and financial sense based on your driving patterns, charging access, and budget.
The Formula
Decision Score = (Financial Benefit + Practical Suitability + Infrastructure Access) Γ· 3
Worked Example
A commuter: 15,000 miles/year, home charging available, $45K budget, 95% of trips under 100 miles.
- Financial benefit: 15K miles Γ $0.10 saving/mile = $1,500/yr = 85/100
- Practical: 95% trips within range = 90/100
- Infrastructure: home charging = 95/100
- Decision score = (85 + 90 + 95) Γ· 3 = 90%
π Score of 90% strongly favors EV switch, high mileage, home charging, and suitable driving pattern make EV the clear choice. The $7,500 federal tax credit makes the decision even stronger.
Why This Matters
Personalized decision
Generic EV advice ignores individual circumstances. Your driving pattern, charging access, and budget determine the right choice.
Avoid regret purchases
Buying an EV without home charging or with regular 300+ mile trips leads to frustration and potential resale loss.
Timing optimization
For some drivers, waiting 1-2 years for better range and lower prices makes more financial sense than buying now, though the federal tax credit creates urgency.
Common Mistakes
β Basing decision on longest trip
If 95% of trips are under 100 miles, one annual 500-mile road trip should not determine your daily vehicle choice.
β Assuming public charging only
Without home charging, EV running costs double. Home or workplace charging is essential for maximum benefit.
β Not test driving
EV driving experience is fundamentally different. Many concerns disappear after a weekend test drive.
Industry Benchmarks
| Category | Good | Average | Poor |
|---|---|---|---|
| High Suitability | 80%+ score | Home charging + 10K+ miles/yr | Below 50% score |
| Break-even Mileage | 10,000+ miles/yr | 6,000-10,000 | Below 6,000 |
| Charging Access | Home + work | Home only | Public only |
Source: DOE Alternative Fuels Data Center & Kelley Blue Book 2025
Benchmark data sourced from DOE Alternative Fuels Data Center & Kelley Blue Book 2025.